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Asteroid Collisional Evolution StudiesUnderstanding asteroid collisional evolution is important for characterizing the physical state of asteroids today and for learning about the processes that acted in this region of the solar system early in its history. The collisional outcome algorithm in the numerical simulation of asteroid evolution was revised to reflect pressure-strengthening. Asteroid collisions are now treated as a distribution of oblique impacts rather than as only head-on collisions. The initial and evolved size distribution of a plausible asteroid population is compared with the observed size distribution. Asteroid accretion times and reconstruction of the primordial solar nebula suggest that there was significantly more mass in this part of the solar system when the asteroids were accreting.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Davis, D. R.
(Planetary Science Inst. Tucson, AZ, United States)
Chapman, C. R.
(Planetary Science Inst. Tucson, AZ, United States)
Weidenschilling, S. J.
(Planetary Science Inst. Tucson, AZ, United States)
Greenberg, R.
(Planetary Science Inst. Tucson, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1985
Publication Information
Publication: NASA, Washington Repts. of Planetary Geol. and Geophys. Program, 1984
Subject Category
Lunar And Planetary Exploration
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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